Answers

Add 81/27 and 54/90

1^st number: 3 0/27, 2^nd number: 54/90

81/27 + 54/90 is 18/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 27 × 10 = 270,
   81/27 = 81 × 10/27 × 10 = 810/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   54/90 = 54 × 3/90 × 3 = 162/270
4. Add the two like fractions:
   810/270 + 162/270 = 810 + 162/270 = 972/270
5. 972/270 simplified gives 18/5
6. So, 81/27 + 54/90 = 18/5
   In mixed form: 33/5

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